Boiler and heating arrangement therefor.



E. F. W. ALEXANDERSON. BOILERANDHEATING ABRANGEMENT THEHEFOR.

l APPLlcffwmnl man Nov. 11, 1913.

1,174,375. Patented Mar. 7, 1916.

pipe such as illustrated or any other form desired. It is to be further understood that the boiler need not take the specific form illustrated as the tubes 9 need not necessarily be depending and attached at their lower ends to the wall 13, as said tubes might be otherwise arranged and the wall 13 might 'be used as a dividing and heat transmitting' and directing wall only.

'l/Vith the arrangement as described, the heat conducting wall 13 will be heated by direct radiation from the fire, that portion of the wall which is directly over thefire box receiving the most heat from radiation, while the portion farther therefrom will receive proportionately less. This heat will be conducted through the wall 13 to the tubes 9. The hot gasespoming from the ire will be deflected along the wallI 13 to the baelrof the furnace where they will then pass around the end of said wall and forward to the exit 8 imparting heat to the tubes 9. It will be clear that these gases being applied tothe tubes farthest from the fire box first will give up more heat thereto, the gases gradually cooling as they move forward. By this arrangement those tubes which receive less heat from radiation receive proportionately more from the hot gases whereby a substantially equal heating oi all the depending tubes results.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the -apparatus shown is only illustrative, and

that the invention can be carried out by other means.

`What I claim as new and desire to secure by Letters Patent of the United States, is

l. The combination with a tire-box and a pluralityl of fluid containing elements arranged to be heated therefrom, portions of said elements being more remote from said lire-box than other portions thereof, of a wall formed of heat conducting material operatively arranged with relation to the fluid containing elements for distributing the heat duc to radiation and directing` the hot gases so that the said elements willvbe uniformly heated.

2. The combination with a lire box and a plurality of fluid containing elements arranged to bo heated therefrom, portions of said elements being more remote from: said :fire box than other portions thereof, of a dividing Wall of heatconducting material in thermal relation to said elements, said wall acting to conduct radiant heat to said elements, and t direct lthe hot gases so that they are applied to those portions of the elements most remote from the re box first.

3. A boiler comprising a plurality of de pending tubes having their upper ends com-- munieating with a vapor .chamber andtheir lower ends embedded in a wall of heat conducting material.

4l. A boiler comprising a plurality of depending tubes having their upper ends communicating with a vapor chamber and their lower ends embedded in a wall of heat conducting material, said wall comprising a plurality of blocks.

5. A boiler comprising a vapor chamber, an inlet and an outlet 'conduit communieating therewith, a plurality of depending` tubes, each opening at one end into said ehamben'and a Wall of heat conducting material in which the otherends of said tubes are embedded.

G. lllhe combination with a lire box and a plurality of depending tubes arranged to be heated therefrom, some of said tubesY being more remote from the fire box than others, of a wall of heat conducting "material operatively arranged with relation to the tubes for causing the tubes nearest the fire box to receive a greater amount of heat by direct radiation and a lesser amount from hot gases, and those more remote from the lire box to receive a proportionately less amount from radiation and a greater amount from hot gases, whereby all said tubes will receive substantially equal amounts of heat. .e 7. lhe combination with a fire box and a plurality or' depending tubes arranged to be heated therefrom, some of said tubes being`- more remote from said lire box than others, of a dividing wall of heat conduc .tive material separating said tubes from the fire box and in thermal relation to said tubes, said wall acting to conduct radiant heat to said tubes and to direct the hot gases so that they are applied to the tubes most remote from the fire box first.

In witness whereof I have hereunto set my hand this th day of November, 1913.

ERNST F.,W. ALEXANDERSON. Witnesses:

BENJAMIN B. HULL, II'nLnN Onrom). 

